You have taken E coli strain A which has its own plasmids and mixed it with E coli B strain without plasmids E coli B cells now have plasmids but in addition they also carry some genes from E coli A strain. What has happened is:.
A. The E coli B cells have become mutants of the original culture.
B. Vertical transmission of DNA has occurred.
C. An example of transformation.
D. The calls of E coli A were Hfr cells.

Explanation:

1. Hfr strain;  A strain of bacterial that possesses the F factor which is  integrated into the their genome, and when it conjugates with another bacterium, it may transfer a copy of the F factor as well as a small part or the entire chromosome( genome) to the recipient bacterium.

2. Hfr cells are able to convert F- recipient ( which lacks F plasmid) cells to F+.

3. As given here, E. coli strain A has its own plasimd and when mixed with plasmid B ( which do not have its own plasmid), then the plasmid B gain plasmid as well as some genes from strain A, it indicate that the cells of E. coli A were Hfr cells.

a motor homunculus represents a map of brain areas dedicated to motor processing for different anatomical divisions of the body.

homunculus represents the importance of various parts of your body as seen by your brain. as a result, they take up a lot of brain space. although the cortical homunculus is a curiosity, penfield's work in mapping the brain's relationship to the body was invaluable.

i think it is dna, i'm not totally sure but i think it might be.